"The dimensions of the rods and their average speeds are similar to those of multiflagellar bacteria such as Bacillus cereus," Sen notes. "Control experiments establish that purely Brownian motion occurs in the absence of the hydrogen peroxide fuel. "Catalytically driven nanomotors are autonomous in that they do not require external electric, magnetic, or optical fields as energy sources," he adds.
by MICHAEL FREEMANTLE, C&EN LONDON |
February 21, 2005